Overview of USB Battery Charging Revision 1.2 and the Important Role of Charger Detectors

By: Mohamed Ismail

Abstract: This application note explains details of the USB Battery Charging Specification 1.2, and the role of charger detection. With the use of charger detection ICs, the USB connector on a portable device becomes a versatile component. The built-in BC1.2 compliance keeps the implementation clean and simple to use. When designing a compact and portable product, the wealth of features accompanying charger detection ICs make them an extremely attractive integrated circuit.